Can we analyze flood inundation area from satellite data? What kind of the satellite data? Usually the satellite data cover with cloud because of in the rainy season. Do you have any suggestion?
Yes it is possible to map the inundated area for that you need pre and post flood images and one important thing is the scale at what scale you are going to analyse the flood inundation map , you need the same resolution data.
you should have a look a SAR (Synthetic Aperture Radar). The technique is not influenced by clouds and well able to discriminate water from other surfaces. Sensors are for example: TerraSAR-X, Radarsat, Sentinel-1, ... -good luck.
everything depends what you have in mind under the term "inundation map", remote sensing can be used for delimitation of flooded areas hovewer no information about water depth (velocity, flow, volume) can be extracted from space sensors.
Yes, you can map flood inundated areas using both optical and microwave remote sensing data. while using optical data, you need to map during pre flooding season and post flooding season. If you want to map inundation during rainy season, you need to use c-band HV microwave data as microwaves penetrate through cloud cover.